摘要
SG地区上古生界天然气储量丰富,但地质特征复杂,对其主要储层段的砂体展布规律及储气砂体的叠置关系认识不够,增加了开发的难度。根据测井资料的响应特征所反映的众多地质信息,提取识别沉积相的标志,通过分析储层段砂体内部的层理构造特征、沉积能量变化、沉积韵律、物源供给状况等,得出了不同沉积亚相、沉积微相的测井显示特征,并重点分析了SG地区主要储层段(上古生界石盒子组及山西组)的沉积亚相、沉积微相特征;分析了主力气层的砂体展布规律。
Abundant gas reserves exist in upper Palaeozoic in SG area with complicated geological characteristics. Development in this area becomes difficult because of less understanding of sand facies distribution principles of primary reservoir intervals and superposition relation for gas bearing sand facies. It becomes significant and necessary to study sedimentary facies, analyse sand facies distribution principles for exploration&development in this area. In terms of geological data provided by logging and signs to identify sedimentary facies, the study concludes different well logging displaying features for sub-sedimentary facies and micro-sedimentary facies by analysing interior bedding structural features of reservoir sand, variation of sedimentary energy, sedimentary rhythm and source supply inside sand facies. Analyses of features for sub-sedimentary facies and micro-sedimentary facies, sand facies distribution principles of primary reservoir intervals (Shihezi Group and Shannxi Group in upper Palaeozoic) in SG area , are emphasized.
出处
《测井技术》
CAS
CSCD
2003年第3期233-237,共5页
Well Logging Technology
关键词
测井方法
SG地区
储层段
沉积相
沉积韵律
沉积能量
层理特征
sedimentary rhythm sedimentary energy bedding feature sub-sedimentary facies micro-sedimentary fades
